Clam-shell bucket.



PATENTED MAY 19, 190s; H. E. H UNTsBBRY. GLAM SHELL BUCKET. APPLICATION FILED JANJB, 1908.`

3 SHEETS-SHEET l.

PATBNTED MAY 19, 190e.

H. E. HUNTSBERY.

CLAM SHELL BUCKET.

APPLICATION PILEDJAN. 1a. 1908.

3 SHEETS-SHEET 2.

PATBNTED MAY 19, 1908. H. E. HUNTSBERY.

SLAM SHELL BUCKET.

APPLICATION FILED JAN.18. 1908.

3 SHEETSSHEBT 3.

ma?. Ye 7176191);

624W@ fr @ff by the excavating power of the bucket can or trays adapted to form a single receptac endsof the bu` come -in contact with any portion of the A The general arrangement of the parts is such 'tion of the invention, suchas will enab e sisting thescraping devices or han -work-'in HABLAN ll. HUNTSBERY, OF CLEVELAND, OHIO.

CLAM-SHELL B UCICE T.

Application filed January 18,

To all whom it may concern:4

Be it known that I, HARLAN E. HUNTs- BERY, a citizen of the United States of America, residing atCleveland, in the county of Cuyahoga and State of Ohio, have invented certaink new and useful Improvements in Clam-Shell Buckets; and I4 hereby declare the following to be a full, clear, and exact descri others skilled-in -the`art to which it pertains to make .and use the same.

This invention relates to new and useful improvements in clam-shell buckets and operatino' mechanism therefor especially adapted forhandling iron-ore and similar material.

The object of my invention is to provide a bucket of the type known as a power opening grab, which will be simple and strong 1n construction, compact in size and capable of stretching over a large area vwhen open.

My invention, therefore, consists in .providing new and improved means for sus ending the respective halves of the bucket w erebe most advantageously applied, all acking of the material avoided and the comp ete excavation of thematerial secured.

` My invention further consists in the features of construction vand combination. of parts as described in the s ecilication, pointedoutin the claims and i ustrated in the accompanying drawings.

In generalmy bucket comprises two scoops e or bucket when their front edgesare brought into contact. These scoops are suspended from shafts by a combination of arms or links and the power for opening and closing the same is a plied through a seriesof sheaves and ropes. e supporting and operating mechamsm is so arranged that no part thereof overhancs or rojects beyond the sides or" Iketand consequently will not vessel orfboat where the bucket is' bein used.

as to secure the minimum hei ht of structure when the bucket is closed an the maximum stretch for the length of arms, thus allowincr the `bucket to be readily operated in the hol` of a vessel between decks or in other comparatively shallow or low places, and the arge area' covered by the bucket when open permits the same to be used for scraping the ore together thereby supplementin and as- Speccaton of Letters Patent.

Patented May 19, 1908.

1908. Serial No. 411,423.

getting the ore below the hatchways.

the great stretch of this bucket, in connection erate the bucket the full stretch in either rection therefrom, thereby making the work ing area of the bucket e ual to twice the.

actual spread thereof. T erefore if threebuckets are beingoperated, and one ofthe buckets becomes disabled, the other two buckets' can be so manipulated as to practically do all the workof the disabled bucket. Furthermore the scoops are so mounted and supported that, when the bucket is ope1 1,the diggin edge of each scoop will be further out than te top or rear edge thereof and there fore in operation -the dig ing edge will come .in contact with the bulk eed or wing of the boat while the top edge of the scoop will be a distance back from eitherv the bulk-head',

wing or'stanchion which permits all vertical;

surfaces as well as the horizontal surfaces to be scraped by the edges of the bucket. When the bucket is open the cutting edes and the front side edges of the scoo s or tra-ys are i-n the same plane andtherefldre when tlc-a bucket is lowered into the hold of a boat the entire lower edges of the scoo s come in contact with the tank tops and the side edges of the scoops therefore prevent the cutting e Oes from digging -into or in any way injuring the tank tops' which would also. in'ure the cutting edges ofthe scoops. Also w en the 'bucket is open the.V frame and supporting arms form a strong arch which adequately resists the thrust or strains consequent upon bringin the bucket into contact with the materia which is to be excavated.

In the accompanying drawings Figure 1 is a side elevation of the bucket closed. Fig. 2 is an end elevation of same. Fig. 3 is a side elevation showin l the l bucket open. Fig. 4 is atop plan'oft 1e bucket open.

Again referring lto the drawings 1 and 2 represent the trays or scoo s which together form the bucket proper. rom a shaft 3 are suspended two pairs of curved arms 4. and 5 and the lower ends of each pair of arms are pivotally secured to the front end of the scoop. The lower ends of said arms are offset so that they are back from the sides of the scoops thereby leaving room for the mounting o'f sheaves on the outside of said arms which will not project'beyond' the sides' of said scoops. To therespective pairs of arms 4' and'5 are pivotally secured pairs of.

respectively which extend between the links of each pair of links. The arms are preferably secured to the supporting links near the center of said links, butthis of course may be .varied in some constructions. At each end of the shaft-3 is arranged a swinging pulley or guide-sheave 16 which extends out the other side thereof.

from oneside thereof and a swinging pulley or guide-sheave 17 which extends out from On eachend of the shaft 9 is .mounted a sheave 1S. 'Near the lower end of each armcl the pair of arms 4 is mounted a sheave 19 and near the lower end of each arm of the pair of arms 5 ismounted a shea've 20. Two opening ropes 23 are provided which extend down at opposite s1des of the structure, each of the ropes passing through a pulley l7then around a sheave 18 and then up where the end is secured vto the shaft 3, and two closingropes, are likewise provided, veach of which passes through a pulley 16 then around a sheave 19 then around a sheave 20 and back the sheave 19 to whichit is secured.

The operation of the bucket will be readily understood. A ull on the closing rope will of course draw t ie lower ends of the arms' 4 and' toward each other causing the front ends of the scoops to swing together. As the ends of the scoops approach each other the free 'ends ofthe links 7 and 8 swing down thereby lowering the rear ends of the 'scoops and bringing the' same into the proper posi-` tion to easily pass through the material which is being excavated.

, slacked and an upward pull on the opening Then it is desired to open the bucket the closing lineis i rope causes the free ends of the links 7 and S torswing up towards the upper ends of the pairs of arms 4 and 5, and at the same time the upper ends of said arms are drawn down toward said links so that a very powerful and quick movement is secured which will openthe bucket against considerable. opposition, and therefore when working in clinging or ad hesive material there is, no liability of the bucket becoming stuck in its closed position and they buckety will operate with considerable facility even when there is a great weight of material actually adhering to the scoops.\ This feature is also of importance as heretofore referred to when'it is desired to heel one of the scoops and use the other scoop for scraping together the material which is after wards toy be scooped up. The operation of heeling the scoop consists simply, as is prob' ably understood, in permittin thejfrontend of one scoop to become embe ded in a small q uantity of the material and, using such a point as acenter, o erate the other scoop to' scrape'theemateri upto land around the 'quantity which has been leftras the heel. -In

.this way an areahaving a diameter equal to twice the stretch of the scoops can be thoroughly scraped.

lnorder to take up and prevent undue strain when the bucket is opened a stop 20 is arranged on'each'of the links'7 and is designed to abut against the ends of the arms 4 and 5 when the bucket is in its farthest open position.

What I claim is,"-

1. In a clam shell bucket, the combination' of a pair of scoops, swinging arms pivotally` secured to theA front ends of said scoops, links pivotally secured=to said arms, arms pivotally secured at their lower ends to the rear ends of said scoops and at their upper ends to said links, means for causing the free ends of said links to approach the upper ends of said first-mentioned arms and means for causing the lower ends of said arms to approach each other, for the purpose set forth.

2. In a clam shell bucket, vthe combination of a pair of scoops, swinging. arms secured to the front endsof said scoops, links p ivotally secured to said' arms, armspivotally secured at their lower ends to the rear ends of said scoops and at their upper ends to 'said links intermediate of the ends of s'aid links, means for causing the free ends of said links and the upper ends ofsaid lfirst-mentioned arms to approach 'each other so as to open said bucket and means for causing the lower ends of said first-mentioned arms to approach each other so as to close said bucket.

3. ln a clam shell bucket, the combination of a pair of scopps, swinging arms secured to the front ends of said scoops, sheaves mounted on 'the lower ends of said arms, links pivotally secured to said arms, sheaves carried by said links, arms pivotally secured at their lower ends to the rear ends of said scoops and at theirupper ends to said links, ropes operatively arranged on the sheaves on the first-mentioned arms and ropes operatively connected with the upper ends of said arms and extending over the sheaves on said links.

4. -In a clam shell bucket, the combination of a pair of scoops, swinging arms secured to the front ends of said scoops, sheaves mounted on the Vlower ends of said arms,

links pivotally secured at their ends to said ends of said arms and extending over the sheaves on said links.

5. In a clam shell bucket, the combination the ont ends of said scoops, arms pivotally 4secured to the rear ends of said scoops, a link connecting each arm on the rear ends of said scoops with a corresponding arm on the front ends of said scoops andmeans for moving said links so as to change the relative position of said arms.

6. In a` clam shell bucket, the combination of a pair of scoops, arms pivotally secured to the front ends of said scoops, arms pivotally secured to the rear ends of said scoops, a link connecting each arm on the rear end of said scoops with a corresponding a'rm on the front end of said scoops, sheaves mounted on. the lower ends of said firstmentioned arms, sheaves carried by said links and ropes operatively arranged on said sheaves.

7. In a' clam shell bucket, the combination of a pair of scoops, arms pivotally secured to thefront ends of said scoops, links connected at their outer ends with the said arms and havino'r their inner ends lying below the upper ends o said arms, and arms securedto the rear endsof said scoops and having their upper ends connected witlpsaid links intermediate of. the ends thereof.

8. In a clam shell bucket, the combination of'a pair ofscoops, a shaft, arms hung from said shaft andpivotally'secured to the front ends ofi-said scoops, links pivotally secured at their outer ends to said arms,-and having theirinner ends lying below the upper ends of said arms, arms secured to the rear ends of said scoops and to said links intermediate of their ends, a shaft connecting the inner ends of said links, means for causing the armsupporting shaft and the link-connecting shaft to approach each other so as to openl said bucket and means for causing the front arms to approach each other so as to close the bucket 9. In a clam shell bucket, the combination of afpa'ir of scoops, arms pivotally secured to4 of a pair or scoops, a shaft, arms (pivotally hung from said shaft and connecte at their lower ends to the front end of the respective scoops, a link operatively secured to each arm, means operatively connecting said links at their free ends, arms connected at their upper ends to said links near the eenters thereof and at their lower ends to the rear ends of said scoops, sheaves carried by said links, sheaves mounted near the lower` end of eachy ofsaid front arms and guide pulleys arranged on said shaft.

10. In a clam shell bucket, the combination of af pair of scoops, a shaft, arms pivotally suspended from said shaft andcounected at their lower ends with the front ends of said scoops, links pivotally secured to each of said arms, a shaft operatively connecting the free ends of said links, sheaves-'mounted 011 said last-mentioned shaft, arms pivotally secured to each of said links near the center thereof and to the rear ends of said scoops, guide pulleys arranged on the front arm supporting shaft, sheavesV arranged on the front arms, opening ropes secured to the front arm supporting shaft and extending down around the sheaves on said links and through the guide pulleys and closing ropes arranged on the sheaves on the lower ends of said front arms and then passing up through the guide pulleys, substantially as described and for the purpose set forth.

11. In a clam shell bucket, the combination of a pair of scoops, swinging arms secured to the front ends of said scoops, swinging arms secured to the rear ends of said scoops, rigid links connecting the front arms to the rear arms, and means for moving said links so as to change the relative position of said arms.

In testimony whereof, I sign the foregoing specification, in the presence of two wit,

nesses.

HABLAN F). HUNTSBERY. Vitnesses:

VICTOR C. LYNCH, N. L. MoDoNNnLL. 

